For those who feel the need for speed, but are preoccupied with interplanetary missions. For the curious and the courageous, who want to prove their worth. For all you spaceplane buffs out there, who want a real challenge. LOOK NO FURTHER, MY FRIENDS!   (Challenge badge, made by me)   If you've already seen and/or participated in my "Around the World in 80 Minutes" challenge, then you should get the basic gist of this one. And kudos to whoever nomina